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Customer Reviews 51 Reviews

4.73 out of 5 stars

by S. Gouillard (3/19/2015):

Very simple to find what you need with this eq. Read more

42 Reviews
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Maag EQ4® EQ Plug-In
developed by Brainworx

A Transparent, Breathy EQ that Brings your Tracks to Life.

Maag History

In a self-professed quest for “audio perfection,” Cliff Maag designed the EQ4 to provide unparalleled transparency and top-end presence while maintaining a true, natural sound. Based on his classic — and long-discontinued — NTI EQ3 from the ’80s, the EQ4 features Maag’s legendary Air Band control, a major component to the vocal mix chain on Madonna’s Ray of Light as well as Celine Dion’s Taking Chances.

Designed in conjunction with Brainworx, the Maag EQ4 Plug-In is an expertly rendered emulation of this modern classic EQ for your UAD-2 DSP Accelerator or Apollo-equipped workstation.

Now You Can…

  • Add natural, musical presence to vocals, acoustic guitars, and overheads
  • Easily elevate top-end without harshness or hiss
  • Use five-position Air Band control to quickly inject life into dull tracks
  • Make musical broadstroke EQ moves while preserving original source material

A Musical EQ for Any Instrument

Maag designed the single channel, six-band EQ4 to “lift the blanket” from source material and enhance high-end energy without imparting raspy artifacts or phase reversal. But the Maag EQ4 plug-in isn’t just engineered for high-frequency detail — it shapes signals from the top to the bottom with unfettered musicality.


Shape the Low End

Whether you need to jettison a polluting, ultra-low rumble, or simply increase the beef of a kick drum, the Sub control is a powerful tool. The 40 Hz band allows further low-end sculpting as it can open up the bass response in your mixes, make a kick drum bigger, or deftly smooth-out an electric bass.


Add Punch and Clarity

The 160 Hz band can be used to reduce unwanted resonance in vocals or punch up a kick drum, whereas a boost in the 650 Hz band will make vocals clearer and more intelligible. Conversely, cutting this band will make them less direct sounding in the mix.


Sculpt Presence

The 2.5 kHz band is indispensable for controlling the bite of vocals or accentuating the aggression of heavy guitar sounds.

e-guitar-dry e-guitar-maag-eq4


Air Band

The Maag EQ4 plug-in’s Air Band feature is renowned for its ability to bring an organic sheen to any source. A boost-only shelf at 2.5 kHz, 5 kHz, 10 kHz, 20 kHz, and 40 kHz, the Air Band is smooth, sweet, and pleasant sounding, as it opens up the top end response of a single track or an entire mix — even when pushed — like no other EQ.


Listen to more MAAG EQ4 audio examples.
Get full features and specs.





  • David Reitzas

    (Madonna, Celine Dion, Guns N' Roses)

    "I've been using the Maag equipment since 1994. It's the main thing I go to for everything."

    Dylan "3-D" Dresdow

    (Black Eyed Peas, Usher, Michael Jackson)

    "The Maag Audio EQ4 is 6 bands of awesomeness. The sub is getting a lot of use on 808 kicks. The mid bands provide excellent transparency. The 2.5k provides very clear bite on vocals. The AIR BAND is as legendary as ever! It's an epic 500 series unit.”

    Dave Pensado

    (Black Eyed Peas, Justin Timberlake)

    "Every hit, every #1, every Grammy mix I have EVER DONE has featured Maag EQs. The EQ4 is my current favorite product from Maag Audio. I use it to EQ vocals, drums, acoustic instruments and of course the stereo buss.”

User Ratings

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Average Rating (51 Reviews)
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    Nice and easy!
    by S. Gouillard(Thursday 19 March, 2015)

    Very simple to find what you need with this eq. Read More

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    Great for enhancing high frequencies naturally
    by A. Weiss (Saturday 17 January, 2015)

    I had a bass line which I needed to significantly increase its high frequencies in order to break though the mix. Neither other EQ's nor even exciterrs made the job as good as the MAAG EQ. Great EQ, worth every penny. Read More

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    by M. Mabada (Saturday 27 December, 2014)

    Un merveilleux plugin qui donne clarté et dynamisme à la piste traitée, je le conseille vivement !! merci UAD Read More

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    Yes, Maag EQ4 and UA DSP
    by M. Popoola (Monday 29 September, 2014)

    My review may be pointless, D. RADICATI wrote the review for me. He claimed he tested the Plugin Alliance version with the UA version of Maag EQ4 and they are the same. This is the reason I am buying the UA version. I also like him have the Alliance Plugin version, but I needed the UA DSP. I… Read More

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    Simple but effective
    by P. Sommer (Monday 21 July, 2014)

    I find this EQ very responsive and it makes a big difference on whatever I use it on. I love the Air-band, but I try not to use too much of it, which is hard because it sounds so open and beautiful. The only minus is that the level trim is very fiddly. Read More


Features & Specs

Key Feature Bullets

  • Exacting emulation of the Maag EQ4®
  • Six bands of equalization, including the famous AIR BAND®
  • Provides unparalleled transparency and top end presence while maintaining the true natural sound of the original signal
  • The vocal sound of Madonna, Celine Dion, Snoop Dogg, and the Black Eyed Peas
  • Endorsing producers include David Reitzas, Dave Pensado, and Dylan Dresdow 
  • EQ adjustments are obtained with minimal phase shift
  • Additional Trim Control (not found on the hardware), for easier level control
  • Constructed for demanding professional applications
  • The interaction of the band passes of the hardware has been fully captured in the plug-in version

View UAD Instance Chart Here

Parameter Specifications

  • In / Out (Power): discrete 2 step, On / Off 
  • Level Trim: continuous: -24 dB – 0 dB (Output)
  • Sub (Gain): discrete 21 step, -5.0 - 5.0 (value does not equal dB; in 0.5 steps)
  • 40 Hz (Gain): discrete 21 step, -5.0 - 5.0 (value does not equal dB; in 0.5 steps)
  • 160 Hz (Gain): discrete 21 step, -5.0 - 5.0 (value does not equal dB; in 0.5 steps)
  • 650 Hz (Gain): discrete 21 step, -5.0 - 5.0 (value does not equal dB; in 0.5 steps)
  • 2.5 kHz (Gain): discrete 21 step, -5.0 - 5.0 (value does not equal dB; in 0.5 steps)
  • Air Gain: discrete 21 step, 0 - 10.0 (value does not equal dB; in 0.5 steps)
  • Air Band (Frequency): discrete 6 step (Off, 2.5 kHz, 5 kHz, 10 kHz, 20 kHz, 40 kHz)


Maag EQ4 Manual

Apollo Software Manual (Thunderbolt)

Apollo Software Manual (FireWire)

UAD Plug-Ins Manual

UAD System Manual

UA Product Catalog